PHYS 233 Email


Part of the weekly homework assignment is to done in Webassign (always best to go there via the Blackboard link) and part will be done on paper and handed in. The paper HW problem is also found in WebAssign. For convenience all WebAssign HW assignments are also listed below.

Both are due on Fridays at 5 pm. The paper homework must be put into the PHYS 233 HW slot, just across the hallway from the lab entrance (PHYS 154).

Please note that WebAssign has some particular requirements on how answers are entered. If it is not accepting your answer check out: Answers that cannot be understood. Please follow the instructions for the problems that are given in the WebAssign environment. The links below are to public forms of the problems and may not include specialized WebAssign instructions.

You will be asked to do 4-5 challenging problems including estimations, explanations, essay questions, worked out problems, and even some challenging multiple choice questions. You are encouraged to work on these with friends. We suggest using the Help Center for PHYS 233, which is conveniently located in the Lab Room (PHYS 154). (Schedule TBA)

You have to write up your solutions independently. Be careful: If two or more submitted answers are essentially identical, neither will receive credit. The quality of the presentation will be considered in the score as well as the quality of the solution.

It is primarily your responsibility to figure out what you might have done wrong when you get your graded paper HW problems back. If you need help, however, just bring it to the Help Center and discuss it with a TA.

The links given in the schedule below are for your reference, but they show the HW problems in a different format than what is given in WebAssign. You must use WebAssign versions to get credit for your work.

Due date

WebAssign HW
(due at 5 PM)

Paper HW
(also due at 5 PM
Jan 19
HW 01

1. How big is a protein molecule?

2. How big is a byte

3. Scaling cubes

4. Sensing molecular signals

Jan 26
HW 02

1. Tortoise and Hare

2. Testing the Motion Detector

3. Atorvastatin Calcium

4. Moving a Vesicle

5. Changing the axis on the grand jété
Feb 2
HW 03

1. Making up a Lap

2. Hitting a Bowling Ball

3. Blood and Breath

4. Moving through a cell

Feb 9
HW 04

1. Rolling up and down

2. Comfort with forces

3. Bacteria on your skin

4. Molly on the skateboard

5. Pushing a carriage

Feb 23
HW 05

1. The flying squirrel and the water flea

2. Stretching two springs

3. The swimming paramecium

4. Population growth

5. Force on a woodpecker
Mar 2
HW 06

1. Forces between charges

2. Three-charge problems

3. Estimating charge on DNA

4. Molecular E-forces

5. PIP2
Mar 9
HW 07

1. Colliding carts

2. Molecular collisions 2

3. Break a leg (Not!)

4. Diffusion and slime molds

5. Trap-jaw ants
Mar 23
HW 08

1. Diffusion in capillaries

2. Random vs coherent motion (Listeria)
Apr 6
HW 09

1. Kinetic theory and pressure

2. Blood flow and pressure

3. Walking on Water

4. Jittery cells

5. PhET Under Pressure

Apr 13
HW 10

1. What if the Greenland icesheet melts?

2. Bound states

3. The train, the hill, and the bumper

4. Electric PE problems

5. What's conserved?

Apr 20
HW 11

1. Skateboarder graphs

2. Going to a deeper well

3. Thermal to chemical energy transfer

4. A nice cup of tea

5. Gauss gun representations

Edited by S. M. Durbin January 2018